Maybe. I agree that the more interaction you have with a character the more you are willing to remember it. Regardless though, naming an NPC Uwilsyng is just absurd. I'd prefer a little bit more traditional rather than "fun" names at this point in the game.

I wasn't that big of an XI player, I think I briefly remember seeing Joacrim, not Horst though. Regardless, I can pronounce those names just like any other name and I don't have to read it over five times before I understand it.
One run through of a name should be enough to understand how to read and comprehend it.